HarmonyOS 时间戳如何转换为xxxx年xx月xx日的字符串

getDateStringWithTimeStamp(timestamp: number) :string{ 
  let date = new Date(timestamp); 
  const year = date.getFullYear(); 
  const month = ("0" + (date.getMonth() + 1)).slice(-2); 
  const day = ("0" + date.getDate()).slice(-2); 
年${month}月${day}日` 
  return formattedDate 
}
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